ETI MS18 Motor Starter, 2.5–4 A

The ETI MS18 motor starter is a robust and reliable protection device specifically engineered for electric motors operating within a current range of 2.5–4 A. This compact unit serves as a critical component in industrial and commercial electrical systems, providing essential safeguards against overloads and short circuits to ensure the longevity and safe operation of connected machinery. Designed for efficiency, the MS18 offers precise motor control and consistent performance even in demanding operational environments.

Advantages

The primary advantage of the ETI MS18 lies in its comprehensive protection capabilities, which effectively prevent damage to motors caused by electrical faults. Its compact design, measuring only 45 mm in width, allows for space-saving installation within control panels and distribution boards. The device is built to withstand a wide range of operating temperatures, making it suitable for diverse industrial settings. Furthermore, its high-quality construction ensures durability and reliable switching performance, reducing the need for frequent maintenance and minimizing system downtime.

Suitable for

• Industrial motor control systems
• Commercial ventilation and pumping equipment
• Conveyor belt motor protection
• Small-scale machinery automation

This motor starter may not be suitable for applications requiring current ratings outside the 2.5–4 A range or for environments where the ingress protection rating of IP20 is insufficient, such as areas exposed to dust, moisture, or direct water spray. It is also not intended for use in high-voltage systems exceeding 690 V.

Key specifications

• Current range: 2.5–4 A
• Short-circuit breaking current: 44 A
• Rated operational voltages: 230 V, 400 V, 500 V, 690 V
• Motor power capacity: 1.1–1.5 kW
• Dimensions: 45 mm width, 89.5 mm height
• Protection rating: IP20
• Operating temperature range: -25°C to +60°C

The ETI MS18 is designed for installation by qualified personnel within a standard electrical enclosure. It should be mounted on a DIN rail to ensure stability and proper alignment. Once mounted, the motor leads must be connected securely to the terminals, ensuring that the current setting is calibrated correctly within the 2.5–4 A range according to the specific motor requirements. Regular inspections should be performed to verify that all connections remain tight and that the device is free from debris.

What to consider before purchase

• Verify that the motor's full-load current falls within the 2.5–4 A range.
• Ensure the installation environment meets the IP20 protection standard.
• Check that the supply voltage is compatible with the rated voltages of 230 V to 690 V.
• Confirm the available space in the control cabinet for a 45 mm wide unit.

Always ensure that the power supply is completely disconnected before performing any installation or maintenance tasks on the motor starter to prevent electrical shock.